#region " LICENSE "
// DRILL - Dependency Resolution Interface Layer Library
// Copyright (c) 2008-2012 Wade A. Reynolds. All rights reserved.
// http://drill.codeplex.com/
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.Configuration;
using Drill.Extensibility;

namespace Drill.Configuration.ConfigFile
{
	public class ConfigSourceElement : ConfigurationElement, IConfigSourceConfiguration
	{
		private const string EnabledAttributeName = "enabled";
		private const string KeyAttributeName = "key";
		private const string MethodAttributeName = "method";
		private const string ValueAttributeName = "value";

		/// <summary>
		/// Gets a value indicating whether the item is enabled.
		/// </summary>
		/// <value><c>true</c> if enabled; otherwise, <c>false</c>.</value>
		[ConfigurationProperty(EnabledAttributeName, DefaultValue = true, IsRequired = false)]
		public bool Enabled
		{
			get { return (bool)this[EnabledAttributeName]; }
		}

		/// <summary>
		/// Gets the key.
		/// </summary>
		/// <value>The key.</value>
		[ConfigurationProperty(KeyAttributeName, IsRequired = true)]
		public string Key
		{
			get { return this[KeyAttributeName] as string; }
		}

		/// <summary>
		/// Gets the configuration method used by the dependency resolver.
		/// </summary>
		/// <value>The configuration method used by the dependency resolver.</value>
		[ConfigurationProperty(MethodAttributeName, IsRequired = true)]
		public string Method
		{
			get { return this[MethodAttributeName] as string; }
		}

		/// <summary>
		/// Gets the configuration method used by the dependency resolver.
		/// </summary>
		/// <value>The configuration method used by the dependency resolver.</value>
		DrillBitConfigMethod IConfigSourceConfiguration.Method
		{
			get
			{
				string methodString = Method;

				DrillBitConfigMethod method;

				if (string.IsNullOrEmpty(methodString) || false == Enum.TryParse(methodString, true, out method))
				{
					method = DrillBitConfigMethod.Unknown;
				}

				return method;
			}
			set
			{
				throw new NotSupportedException();
			}
		}

		/// <summary>
		/// Gets the value of the configuration source.
		/// </summary>
		/// <value>
		/// A string value that me be empty, null or a value that is 
		/// defined by the particular configuration method being used.
		/// </value>
		[ConfigurationProperty(ValueAttributeName, IsRequired = false)]
		public string Value
		{
			get { return this[ValueAttributeName] as string; }
		}
	}
}